unit LingrRequest;


(*
 *   Copyright (c) 2008 Shintaro Akiyama (freeandnil.self@gmail.com)
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 *   3. Neither the name of the authors nor the names of its contributors
 *      may be used to endorse or promote products derived from this
 *      software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 *   TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *)


interface

uses SysUtils, WSDLIntf;

type
  TLingrRequest = class
  private
    FLeft: TWideStrings;
    FRight: TWideStrings;
  protected
    function Get(S: WideString): WideString;
    procedure Put(Left, Right: WideString);
  public
    constructor Create;
    destructor Destroy; override;
    property Items[Index: WideString]: WideString read Get write Put; default;
    function Catenate: WideString;
  end;

implementation

uses XMLDoc, XMLIntf;

{ TLingrRequest }

function TLingrRequest.Catenate: WideString;
var
  i: Integer;
begin
  for i := 0 to FLeft.Count - 1 do begin
    Result := Result + FLeft[i] + '=' + FRight[i];
    if i <> FLeft.Count - 1 then
      Result := Result + '&';
  end;
end;

constructor TLingrRequest.Create;
begin
  inherited;
  FLeft := TWideStrings.Create;
  FRight := TWideStrings.Create;
end;

destructor TLingrRequest.Destroy;
begin
  FreeAndNil(FLeft);
  FreeAndNil(FRight);
  inherited;
end;

function TLingrRequest.Get(S: WideString): WideString;
var
  i: Integer;
begin
  i := FLeft.IndexOf(S);
  if i <> -1 then
    Result := FRight.Strings[i]
  else
    Result := '';
end;

procedure TLingrRequest.Put(Left, Right: WideString);
var
  i: Integer;
begin
  i := FLeft.IndexOf(Left);
  if i <> -1 then begin
    FRight.Strings[i] := Right;
  end else begin
    FLeft.Add(Left);
    FRight.Add(Right);
  end;
end;

end.
